Civil aircraft equipment maintenance auxiliary device and auxiliary method

The invention relates to the technical field of maintenance auxiliary devices, and discloses a civil aircraft equipment maintenance auxiliary device which comprises a load platform, a distance adjusting piece is installed on the load platform, two base tables arranged in a mirror image mode are in transmission connection with the distance adjusting piece, and first shear type telescopic modules are installed above the two base tables correspondingly. And lifting frames a are arranged above the two first shear type telescopic modules correspondingly, a set of adjusting push rods are fixedly installed on the two lifting frames a correspondingly, extension frames are fixedly installed at the other ends of the two sets of adjusting push rods correspondingly, and a set of first guide rollers are rotationally connected to the extension frames. Through the arrangement of the distance adjusting piece, the two base tables can be synchronously close to each other or synchronously away from each other, the size of a mai